Definitely worth checking, if you have your engine in bits. This phosphor-bronze bush bearing sits behind the automatic injection timer, (the IP drive-sprocket behind the vac. pump)....

While re-building my 617, I assembled the short IP drive and skew-gear for oil-pump drive (N/A only) into the block, and checked the side-shake of this bearing.--Huge!

BUT the excess clearance was Not the bearing bush where it runs on the shaft, The bearing bush was loose in the block. Its held in place by a 10mm bolt with a large washer that sits in a groove in the bearing.

On removing the bearing, it can be seen that it has worn a nice groove, through preumably vibration to make it a loose fit in the block. A replacement bearing bush fixed the issue, and is a tight fit....

--Just thought I would let you guys know. This part is often overlooked in a re-build, as the bush bearing surface does not wear much in normal operation....

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http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....

Stevo said bearing wear in on this bearing may have taken out his Vacuum Pump which intern caused other problems.

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84 300D, 82 Volvo 244Gl Diesel

Considering the size of the haft and the bearing, there's lot of load I gues when using the type of vac. pump which runs on rollers with a cam-ring on the IP timer....

My vac. pump has a splined coupling to a rotating shaft, that operates the two diaphragms.....

There seem to be loads of different vac pumps for these engines!

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http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....

Yep, when I pulled the timing device it had warn a circular grove in the block on the aft side. It had slammed back and forth due to that bronze bushing being warn. I dont know what the lateral movement should be but there was 2.5 mm in mine before I pulled it. This was on an 82 240D that had caught fire inside which I bought cheap but was running at the time. I pulled the VC (which I found too be trashed) as things just didn't sound right.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"